Indications of selected beams for transmission and reception in full duplex operation

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless communication device (WCD) may receive, from a second WCD, transmission configuration indicator (TCI) state information that defines a set of TCI state configurations for a full duplex operation, wherein TCI state configurations of the set of TCI state configurations are associated with respective receive beams and respective transmit beams. The WCD may transmit, to the second WCD, an indication of one or more candidate TCI states, associated with the set of TCI state configurations, for selection by the second WCD for communications using the full duplex operation. Numerous other aspects are provided.

What is claimed is: 
     
       1. A first wireless communication device (WCD) for wireless communication, comprising:
 a memory; and 
 one or more processors, coupled to the memory, configured to:
 receive, from a second WCD, transmission configuration indicator (TCI) state information that defines a set of TCI state configurations for a full duplex operation, the TCI state configurations of the set of TCI state configurations being associated with respective receive beams and respective transmit beams; and 
 transmit, to the second WCD, an indication of one or more candidate TCI states, associated with the set of TCI state configurations, for selection by the second WCD for communications using the full duplex operation. 
 
 
     
     
       2. The first WCD of  claim 1 , wherein the one or more processors are further configured to:
 receive one or more reference signals, transmitted by the second WCD, associated with the set of TCI state configurations via the respective receive beams; 
 transmit one or more uplink signals associated with the set of TCI state configurations via the respective transmit beams; and 
 determine the one or more candidate TCI states at least in accordance with measurements of the one or more reference signals and the one or more uplink signals. 
 
     
     
       3. The first WCD of  claim 2 , wherein the one or more processors are further configured to:
 determine, at least in accordance with the measurements of the one or more reference signals and the one or more uplink signals, signal to interference plus noise ratios (SINRs) associated with the one or more candidate TCI states. 
 
     
     
       4. The first WCD of  claim 3 , wherein the one or more processors, to determine the SINRs associated with the one or more candidate TCI states, are configured to:
 determine the SINRs associated with the one or more candidate TCI states at least in accordance with:
 measure signal strengths of the one or more reference signals transmitted by the second WCD; and 
 measure self-interference of the one or more uplink signals transmitted by the first WCD. 
 
 
     
     
       5. The first WCD of  claim 1 , wherein the TCI state configurations are associated with the respective receive beams and the respective transmit beams at least in accordance with:
 the TCI state configurations indicating respective first reference signal identifications associated with the respective receive beams and respective second reference signal identifications associated with the respective transmit beams. 
 
     
     
       6. The first WCD of  claim 5 , wherein the respective second reference signal identifications are associated with transmit reference signals. 
     
     
       7. The first WCD of  claim 1 , wherein the TCI state configurations are associated with the respective receive beams and the respective transmit beams at least in accordance with:
 respective single codepoints of downlink control information mapping to the respective receive beams and the respective transmit beams. 
 
     
     
       8. The first WCD of  claim 1 , wherein the one or more processors are further configured to:
 receive, from the second WCD, an indication to use a candidate TCI state, of the one or more candidate TCI states, for communicating with the second WCD via a receive beam and a transmit beam using the full duplex operation. 
 
     
     
       9. The first WCD of  claim 1 , wherein one or more of:
 the first WCD comprises one or more of a user equipment or an integrated access backhaul (IAB) node, or 
 the second WCD comprises one or more of a base station, an IAB node, a parent node in an IAB network, a distributed unit in an IAB network, or a central unit in an IAB network. 
 
     
     
       10. A second wireless communication device (WCD) for wireless communication, comprising:
 a memory; and 
 one or more processors, coupled to the memory, configured to:
 transmit, to a first WCD, transmission configuration indicator (TCI) state information that defines a set of TCI state configurations for a full duplex operation, the TCI state configurations of the set of TCI state configurations being associated with respective receive beams and respective transmit beams; and 
 receive an indication of one or more candidate TCI states, associated with the set of TCI state configurations, for selection by the second WCD for communications using the full duplex operation. 
 
 
     
     
       11. The second WCD of  claim 10 , wherein the one or more processors are further configured to:
 transmit, for reception by the first WCD via the respective receive beams, one or more reference signals associated with the set of TCI state configurations. 
 
     
     
       12. The second WCD of  claim 10 , wherein the one or more processors are further configured to:
 select a candidate TCI state of the one or more candidate TCI states at least in accordance with the indication of the one or more candidate TCI states. 
 
     
     
       13. The second WCD of  claim 10 , wherein the TCI state configurations are associated with the respective receive beams and the respective transmit beams at least in accordance with:
 the TCI state configurations indicating respective first reference signal identifications associated with the respective receive beams and respective second reference signal identifications associated with the respective transmit beams. 
 
     
     
       14. The second WCD of  claim 13 , wherein the respective second reference signal identifications are associated with transmit reference signals. 
     
     
       15. The second WCD of  claim 10 , wherein the TCI state configurations are associated with the respective receive beams and the respective transmit beams at least in accordance with:
 respective single codepoints of downlink control information mapping to the respective receive beams and the respective transmit beams. 
 
     
     
       16. The second WCD of  claim 10 , wherein one or more of:
 the first WCD comprises one or more of a user equipment or an integrated access backhaul (IAB) node, or 
 the second WCD comprises one or more of a base station, an IAB node, a parent node in an IAB network, a distributed unit in an IAB network, or a central unit in an IAB network. 
 
     
     
       17. A method of wireless communication performed by a first wireless communication device (WCD), comprising:
 receiving, from a second WCD, transmission configuration indicator (TCI) state information that defines a set of TCI state configurations for a full duplex operation, the TCI state configurations of the set of TCI state configurations being associated with respective receive beams and respective transmit beams; and 
 transmitting, to the second WCD, an indication of one or more candidate TCI states, associated with the set of TCI state configurations, for selection by the second WCD for communications using the full duplex operation. 
 
     
     
       18. The method of  claim 17 , further comprising:
 receiving one or more reference signals, transmitted by the second WCD, associated with the set of TCI state configurations via the respective receive beams; 
 transmitting one or more uplink signals associated with the set of TCI state configurations via the respective transmit beams; and 
 determining the one or more candidate TCI states at least in accordance with measurements of the one or more reference signals and the one or more uplink signals. 
 
     
     
       19. The method of  claim 18 , further comprising:
 determining, at least in accordance with the measurements of the one or more reference signals and the one or more uplink signals, signal to interference plus noise ratios (SINRs) associated with the one or more candidate TCI states. 
 
     
     
       20. The method of  claim 19 , wherein determining the SINRs associated with
 the one or more candidate TCI states comprises: 
 determining the SINRs associated with the one or more candidate TCI states at least in accordance with:
 measured signal strengths of the one or more reference signals transmitted by the second WCD, and 
 measured self-interference of the one or more uplink signals transmitted by the first WCD. 
 
 
     
     
       21. The method  claim 17 , wherein the TCI state configurations are associated with the respective receive beams and the respective transmit beams at least in accordance with:
 the TCI state configurations indicating respective first reference signal identifications associated with the respective receive beams and respective second reference signal identifications associated with the respective transmit beams. 
 
     
     
       22. The method of  claim 21 , wherein the respective second reference signal identifications are associated with transmit reference signals. 
     
     
       23. The method of  claim 17 , wherein the TCI state configurations are associated with the respective receive beams and the respective transmit beams at least in accordance with:
 respective single codepoints of downlink control information mapping to the respective receive beams and the respective transmit beams. 
 
     
     
       24. The method of  claim 17 , wherein receiving the TCI state information comprises:
 receiving the TCI state information via one or more of: 
 a downlink control information message, 
 one or more medium-access-control control elements, or 
 radio resource control signaling. 
 
     
     
       25. The method of  claim 17 , wherein transmitting the indication of the one or more candidate TCI states comprises:
 transmitting the indication of the one or more candidate TCI states via one or more of: 
 an uplink control information message, 
 one or more medium-access-control control elements, or 
 radio resource control signaling. 
 
     
     
       26. The method of  claim 17 , further comprising:
 receiving, from the second WCD, an indication to use a candidate TCI state, of the one or more candidate TCI states, for communicating with the second WCD via a receive beam and a transmit beam using a full duplex operation. 
 
     
     
       27. The method of  claim 17 , wherein one or more of:
 the first WCD comprises one or more of a user equipment or an integrated access backhaul (IAB) node, or 
 the second WCD comprises one or more of a base station, an IAB node, a parent node in an IAB network, a distributed unit in an IAB network, or a central unit in an IAB network. 
 
     
     
       28. A method of wireless communication performed by a second wireless communication device (WCD), comprising:
 transmitting, to a first WCD, transmission configuration indicator (TCI) state information that defines a set of TCI state configurations for a full duplex operation, the TCI state configurations of the set of TCI state configurations being associated with respective receive beams and respective transmit beams; and 
 receiving an indication of one or more candidate TCI states, associated with the set of TCI state configurations, for selection by the second WCD for communications using the full duplex operation. 
 
     
     
       29. The method of  claim 28 , further comprising:
 transmitting, for reception by the first WCD via the respective receive beams, one or more reference signals associated with the set of TCI state configurations. 
 
     
     
       30. The method of  claim 28 , further comprising:
 selecting a candidate TCI state of the one or more candidate TCI states at least in accordance with the indication of the one or more candidate TCI states.